Blind for shop fronts, doors, windows, and the like



1,643,074 E. LAVAGNINO BLIND FOR SHOP FRONTS, DOORS, WINDOWS, AND THELIKE Filed Sept. 24, 1925 Sept. 20, P927.

wugmtoz .Zffiwva 717/6120,

Patented Sept. 20, 1927.

UNITED s rA'ras PATENT OFFICE.

LA'VAGNIIO, OF ANCONA, ITALY.

nnmn non snor raon'rs, nooas, wntnows, ann'rnn 1.11m.

Application fled September 24, 1925, Serial Io. 58,418, and in ItalySeptember 25, 1924. j

The invention refers to an im roved blind for shop fronts, doors and winows and the like and consists inthe provision of rec'-.

configuration of these bendings being such,

that the sheets besides allowing a solid coupling can also rotatearoundtheir coupled ends whilst the blind presents towardthe outsideinextended condition a perfectly plane surface.

It is essential in the invention to provide along the longitudinaledgesof two sheets to be coupled upon one edge a female bending constltutedby a piece of wall bent normally or substantially normall to the sheetand constituted b a circular y bent piece of wall substantial y open andupon the other ed e a male bending to insert within the fem e bendingwhich also presents a normally bent wall plece or a substantiallynormall bent wall iece and a circularly bentw piece whic latter one canbe totally closed so as to present a tubular in or which can only bepartially closed, a lowing this particular conformation of the joint 0.limited rotation for the sheets around the axis ofthe joint so as to beable to run the blind in a place outside its plane of closure andbesides rther to create a perfectly lane surface of the blind towardsthe closed sition.

The invention is clearly illustrated in the accompanying drawin in whichan embodiment of the improved lind is shown in regular section. v

Referring now, more particularly, to the accompanying dra the blind maybe said to consist of a lurality of sections a which are joined toge erat their upper and lower outsi e when in its longitudinal ed s in suchmanner so as to permit of the winding of the blind in a rollike mannerand assuring of a continuous positive eliiagement of the joined sectionsto ensure of e winding thereof. Each of the joints formed between thesections include walls 6 which extend outwardly at substansection, theouter portions of the said curved tially ri ht angles to the plane ofthe sections an edge of the section a'embraces the wall on theoppositeedge of the adjacent section the outer portions of said curvedwall bein bent reversely and extended inwardly su stantially up to theplane of the sections so as 56 to form two concentric snu 1y fittingsleeves c and (1 respectively whi permit of the winding of the blind sothat theycannot become accidentally disengaged during the winding.

It is apparent thai the sections a, may be joined together by ein'g slidlaterally of each other and after being arranged in vertical alignmentcan be. operated in any con-"x venient manner so as to be raised orloweredn Preferably the outer flat faces are arranged in alignment whenthe blind is in a closed or lowered position sons to resent asubstantially flat and unbroken sur ace.

It is believed in view of the fore oing that a further detaileddescription of t e operation of the invention is entirely unnecessary.Likewise it is believed that the advantages of the invention will bereadily apparent.

Havin thus fully described the invention what is c aimed as new anddesired to be ae-' cured by Letters Patent is A blindof the characterdescribed, including a plurality of sections, joints formed between thead acent edges of the sections includin walls extending outwardly atsubstantia ly right an Ice to the plane of the sections and curve sothat the wall of one section embraces the wall of the adjacent wallsbein bent reversely and extending inwardly su stantially to t e plane ofthe sections to form two concentric snugly fitting sleeves permitting ofthe winding of the blind in a roll-like manner and assur' of acontinuous positive engagementof-the j omted sections during the windingthereof.

In testimony whereof I have signed my name to this specification. V

" EDUARDO LAVAGNINO. V

are curved so that the wall on one '0

